LCOE 저감을 위한 해상풍력 일괄설치 하부구조의 운동성능평가 연구

Abstract

In this study, the motion response of the substructure of an offshore wind farm was evaluated under the design environmental conditions during the installation procedure. The substructure of offshore wind farm for LCOE reduction has 3 pontoons and the tower is located in the centre of the structure. Since the centre of gravity of this system is relatively higher than that of conventional type of offshore structures and the restoring moment is relatively small, the motion characteristics of the structure during installation procedures are importance. The motion response of the substructure was evaluated using KRISO's in-house codes, which are AdFlow based on the high-order boundary element method for frequency domain analysis and KIMAPS for time domain simulation. In this study, the initial stage of installation, which is before the legs are lowered on site, was considered for the evaluation to confirm that the installation of the offshore wind farm is possible or not under the environmental conditions on site.